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Finishing the Sidewalk Scaling Situation - American Concrete

Finishing the Sidewalk Scaling Situation An investigation of widespread damage caused by extreme weather by Henry B. Prenger I t was a year of extreme winter weather in Maryland—a year with so many ice storms that salt reserves in the area were nearly depleted. It was 1994, a year that became known within the Maryland State Highway ...

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Finishing the Sidewalk Scaling Situation - Slag Cement News

Finishing the Sidewalk Scaling Situation The August edition of Concrete International Magazine provides an in-depth look at the issues surrounding sidewalk scaling in extreme cold weather and what best practices should be used to mitigate the problem.

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Finishing the Sidewalk Scaling Situation - concrete

Aug 01, 2018  Abstract: Extreme winter weather in Maryland in 1993 caused widespread sidewalk scaling. The damage prompted a long-term study of the causes of deterioration. Many of the problems witnessed are the result of premature finishing of extremely slow setting concrete in cold temperatures or using water as a finishing aid in hot temperatures.

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Finishing the Sidewalk Scaling Situation

Extreme winter weather in Maryland in 1993 caused widespread sidewalk scaling. The damage prompted a long-term study of the causes of deterioration. Many of the problems witnessed are the result of premature finishing of extremely slow setting concrete in cold temperatures or using water as a finishing aid in hot temperatures. Record URL:

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Often asked: How To Finish Concrete Sidewalk? - Haener

How do you broom finish a concrete sidewalk? The typical process for a broom finish is: Pour the slab. Strike off with a screed. Bull float. Wait for the bleed water to evaporate. Although with low water- cement ratio exterior concrete with the proper amount of air, there might not be much bleed water. Trowel. Broom the surface. Cure the concrete.

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Finishing Concrete Sidewalks (Stone Textured Finish)

Jun 15, 2020  In this video I'm finishing a concrete sidewalk with a stone textured stamping mat. When your finishing concrete the most important thing is the timing of when you start the finishing process. When...

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CONCRETE PATIO AND SIDEWALK FINISHING

Aug 05, 2019  #HOWTOFINISHCONCRETE #CONCRETEFINISHINGTECHNIQUESThis video will show you a concrete sidewalk and a concrete patio with me demonstrating the

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Scaling of Exposed Aggregate Sidewalks - Concrete Construction

Some exposed pea gravel aggregate sidewalks were placed in the fall near the shore in the state of Washington, using a 6-bag mix with hot water and an accelerator. The finish was beautiful, and there was no damage from some snow and below-freezing temperatures the first winter. In the following summer an aggregate glaze was applied.

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Concrete Sidewalk Pouring And Finishing For Beginners

Oct 14, 2019  #Concretesidewalk #Pourandfinishconcrete #MikeDayConcreteIn this video I'm going to show you and teach you how to pour and finish a concrete sidewalk slab.If...

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How to Finish Sidewalks Home Guides SF Gate

In most steps of finishing a sidewalk, a light touch is best. The first step in finishing, which is screeding, should begin as soon as the concrete is poured.

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CONCRETE PATIO AND SIDEWALK FINISHING TECHNIQUES HOW TO FINISH CONCRETE

Aug 05, 2019  #HOWTOFINISHCONCRETE #CONCRETEFINISHINGTECHNIQUESThis video will show you a concrete sidewalk and a concrete patio with me demonstrating the

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Construction and Materials Best Practices for Concrete

Surface scaling of concrete sidewalks is largely influenced by the properties and strength of the top layer of concrete that extends a few millimeters into the body of the concrete sidewalk (typically 3 to 6 mm [0.12 to 0.2 inch]). This layer needs to have adequate strength,

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How to Finish Sidewalks Home Guides SF Gate

7. Measure out 5 feet from the beginning of the sidewalk toward the end, and mark one edge of the frame with a pencil or marker. Repeat the mark

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Architectural Flatwork Scaling Concrete Construction Magazine

Dec 02, 2013  Causes. Scaling of concrete flatwork is basically a physical phenomenon related to the expansive pressures created by freezing water. Hydraulic pressures are created by the 9% expansion that occurs in the near-surface zone of the concrete when the growing ice crystals displace the unfrozen water in the capillaries and pores of the cement paste ...

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Prevent Scaling - The Portland Cement Association

Make a final pass with edging, grooving, and floating operations. Avoid steel troweling exterior concrete surfaces, especially at later ages of stiffening. This can reduce entrained air and may promote scaling. Allow additional stiffening. Use appropriate broom to produce the desired texture, soft bristle for fine and medium textures, stiff ...

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Scaling Concrete - Ask the Builder

The expanding ice compresses the air within the bubbles. The air absorbs the impact instead of the cement, sand, and gravel Your contractor is also able to purchase concrete with varying amounts of cement and water. Cement is the glue which holds the sand and stone particles together in concrete. Concrete that will experience freezing ...

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Concrete Finishing - How to Finish Concrete (6 Steps ...

Oct 15, 2020  Trowel the surface. If you’re looking for a smooth, hard, dense surface, use a steel trowel or fresno for this step. Skip troweling if you plan to broom finish your concrete or add a decorative finish. Kraft Concrete Float 24" x 3.25" Lightweight magnesium float for small areas.

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How to repair a crumbling concrete sidewalk - Washington Post

May 24, 2016  Get the spalled concrete damp, brush on the cement paint and, before it dries, cover the paint with the cement stucco. The cement stucco mixture should be two parts sand and one part Portland ...

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Concrete Finishing Options: Trowel, Broom and Stamped

Trowel Finish. The simplest and most basic concrete finish is known as the smooth trowel finish, which is also the most common – you see it on frequent concrete surfaces like sidewalks, patios and others. Troweling can be done either mechanically or through manual means, though the original name came from the use of a hand trowel, or a flat ...

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De-icing Salt Scaling Summary Report - EcoSmart

disappeared) did not improve the scaling resistance of concrete incorporating SCMs. This is probably due to the fact that the bleeding of the concrete mixtures investigated was negligible. Specific Conclusions For sidewalks cast in the Spring 2002: • The use of fly ash decreased the scaling resistance of the concrete tested according to

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Avoid Surface Defects on Exterior Slabs - For Construction Pros

Apr 21, 2011  Premature finishing, overworking the surface and inadequate curing are typical causes of surface defects on exterior slabs. Some of these defects include premature wear, scaling, mortar flaking ...

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(PDF) Concrete scaling - A critical review - ResearchGate

Jan 01, 2007  Abstract and Figures. Scaling, i.e., local flaking or peeling away of the near-surface portion of a concrete slab is the most common type of surface distress, especially in areas exposed to cyclic ...

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Concrete Problems, Poor Workmanship, Improper Construction

Feb 04, 2015  Scaling is what happens when concrete begins to flake off the surface or peel away in sections. This is often due to inadequate concrete strength and occurs during freeze/thaw cycles.

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Concrete Slab Surface Defects: Causes, Prevention, Repair

early finishing. 3. Finishing when the concrete is still spongy. Any tool used to compact or finish the surface will tend to force the entrapped air toward the surface. Blisters may not appear after the first finishing pass. However, as the work progresses (during the second or third pass), the front edge of the trowel blade is lift-

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How to repair concrete sidewalk that is scaling on the top?

Feb 28, 2018  To address the problem after it has occurred requires covering the entire affected area with a polymer-modified cementitious overlay in a color matching the existing driveway. Once the overlay cures, apply a waterproofing sealer to prevent the problem from reoccurring. See 1 previous. Shoshana on Mar 01, 2018.

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Prevent Scaling - The Portland Cement Association

Make a final pass with edging, grooving, and floating operations. Avoid steel troweling exterior concrete surfaces, especially at later ages of stiffening. This can reduce entrained air and may promote scaling. Allow additional stiffening. Use appropriate broom to produce the desired texture, soft bristle for fine and medium textures, stiff ...

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Scaling Concrete Surfaces — What, why, how? - Nevada Ready

Scaling is local flaking or peeling of a finished surface of hardened concrete as a result of exposure to freezing and thawing. Generally, it starts as localized small patches which later may merge and extend to expose large areas. Light scaling does not expose the coarse aggregate. Moderate scaling exposes the aggregate and may involve loss of ...

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Scaling Concrete Surfaces

Scaling Concrete Surfaces Technical information prepared by Ohio Concrete SCALING: Scaling, as defined by ACI Committee 116R, is the ‘local flaking or peeling away of the near-surface portion of hardened con-crete or mortar’. It is primarily a physical action created by hy-draulic pressures from repeated cycles of water freezing within

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CIP 2 - Scaling Concrete Surfaces - concrete is better

Note—Occasionally concrete peels or scales in the absence of freez-ing and thawing. This type of scaling is not covered in this CIP. Often this is due to the early use of a steel trowel, over-finishing or finishing while bleed water is on the surface. (see CIP 20 on Delami-nations) Scaling concrete surface WHAT is Scaling HOW to Prevent Scaling

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Concrete Finishing Options: Trowel, Broom and Stamped

Trowel Finish. The simplest and most basic concrete finish is known as the smooth trowel finish, which is also the most common – you see it on frequent concrete surfaces like sidewalks, patios and others. Troweling can be done either mechanically or through manual means, though the original name came from the use of a hand trowel, or a flat ...

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Choosing the Right Concrete Finish - Pacific Garden Design

Mar 17, 2017  A gray, broom-textured concrete is the most basic outdoor concrete finish. It is commonly used for sidewalks and driveways and, as the name suggests, involves dragging a broom across the surface of the wet concrete to give it a ridged texture. Its popularity lies in the fact that it is a durable and economical finish, as well as one that ...

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(PDF) Concrete scaling - A critical review - ResearchGate

Jan 01, 2007  Abstract and Figures. Scaling, i.e., local flaking or peeling away of the near-surface portion of a concrete slab is the most common type of surface distress, especially in areas exposed to cyclic ...

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How to Fix Spalling Concrete (DIY) - Family Handyman

Jun 24, 2019  Stake 1×2 furring strips along the edges of the driveway or patio, keeping them 1/2 in. above the existing surface. “Picture frame” the section by nailing 1/2-in. plywood strips, flat to the concrete, along the control joints. Mix one part Type 1 Portland cement and one part fine sand by volume. Add water until the mixture is the ...

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Concrete, Construction, or Salt— Which Causes Scaling?

a) scaling was found to be due to either poor air-void systems in the concrete (Part I), or improper finishing practices (Part II); b) 3- to 4-in.-diameter (75 to 100 mm), through-depth core samples were collected from the scaled and sound areas, which were either from the adjacent panels of a sidewalk, a driveway slab, or from

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Concrete Slab Surface Defects: Causes, Prevention, Repair

early finishing. 3. Finishing when the concrete is still spongy. Any tool used to compact or finish the surface will tend to force the entrapped air toward the surface. Blisters may not appear after the first finishing pass. However, as the work progresses (during the second or third pass), the front edge of the trowel blade is lift-

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8 Types of Concrete Finishes [PDF] - The Constructor

Fig 2: Broom Finished Concrete. Dragging of broom on the fresh concrete surfaces creates small ridges that provide for traction control and slip-resistant. 3. Stamped Concrete Finish. The stamped concrete finish is obtained by pressing the

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Damages to Concrete Caused by Winter - Part I by Sealant Depot

Feb 06, 2018  Scaling. Scaling is the world’s single-most common form of damage that affects exterior concrete slabs. It is the delamination of a thin layer of the concrete’s surface. At times, this can look like peeling of thin sheets or small “scales.”. This is generally differentiated from spalling based on the depth of the damage.

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An ingenious way to fill gaps between concrete driveway slabs

Jun 08, 2012  Fill the trenches on either side of the driveway with small, rounded pea gravel (the size of marbles or peas). Do the same for the gaps between the concrete slabs, but stop filling the gaps about ...

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